<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>html5语义化标签</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        html, body{
            height: 100%;
        }
        header, footer{
            height: 50px;
            line-height: 50px;
            text-align: center;
            background: orange;
        }
        section{
            height: calc(100% - 100px);
            background: greenyellow;
        }
        nav, main, aside{
            height: 100%;
            float: left;
        }
        nav, aside{
            background: gray;
            width: 100px;
        }
        main{
            background: rgb(4, 238, 247);
            width: calc(100% - 200px);
        }
        .article1{
            height: 60%;
        }
        .article2{
            height: 40%;
        }
    </style>
</head>
<body>
    <header class="header">header</header>
    <section>
        <nav>
            <figure>nav</figure>
            <ul>
                <li>123</li>
                <li>123</li>
                <li>123</li>
                <li>123</li>
            </ul>
        </nav>
        <main>
            <article class="article1">
                <header>article-header</header>
                <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Inventore veritatis, earum in reiciendis dolore possimus nobis dolorem eos perferendis beatae magni, quo deserunt aperiam placeat ducimus dignissimos pariatur ipsa quod.</p>
                <footer>article-footer</footer>
            </article>
            <article class="article2">
                <header>article-header</header>
                <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Inventore veritatis, earum in reiciendis dolore possimus nobis dolorem eos perferendis beatae magni, quo deserunt aperiam placeat ducimus dignissimos pariatur ipsa quod.</p>
                <footer>article-footer</footer>
            </article>
        </main>
        <aside>
            <figure>aside</figure>
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eum cumque est dolore ut quod! Beatae, aliquid explicabo laudantium dolores est magni expedita temporibus! Aliquam, amet. Et, saepe? Rerum, libero expedita.</p>
        </aside>
    </section>
    <footer class="footer">footer</footer>
</body>
</html>